Как добавить обработчик ColumnChanging for DataTable?

(vs2005, C#)

In msdn wrote :

To create the validation event handlers
Open the NorthwindDataSet in the Dataset Designer by double-clicking the NorthwindDataSet.xsd file in Solution Explorer.

Double-click the Quantity column in the OrderDetails table to create the OrderDetailsDataTable_ColumnChanging event handler. (In C# only the data table's partial class will be created.)

Note
Double-clicking the table name (Order Details in the title bar) creates an event handler for the RowChanging event.


Я сделал всё как написано!!!!

In result I have this code :

namespace ValidationWalkthrough {



partial class NorthWindDataSet

{

partial class OrderDetailsDataTable

{


}

}

}

But don't have event handler

How to add event handler?

C ув. Tors

блин я не пойму, что такая большая проблема создать обработчик события в VS2005, C#
на нескольких форумах спросил даже на MSDN — форуме и нема толковых ответов